The fix is now publicly available in the latest InDesign update, 15.1.1
Please update to this latest version to get the fix.
Adobe InDesign team
An error occurred while saving the commentJürgen commented
If it is right what Raphael Freeman said:
"this bug was reported 10 days ago. Why are you only now investigating the issue?"
I cant understand Adobe not to have done someting.
For example: recall this version (15.1).
I have so much more work, to repair several things and the deadline has nearly gone.
Adobe you should think about "Money back!"